320431909364 has 24 divisors (see below), whose sum is σ = 649890073728. Its totient is φ = 135393763680.

The previous prime is 320431909319. The next prime is 320431909397. The reversal of 320431909364 is 463909134023.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80589539 + ... + 80593514.

It is an arithmetic number, because the mean of its divisors is an integer number (27078753072).

Almost surely, 2^320431909364 is an apocalyptic number.

It is an amenable number.

320431909364 is an abundant number, since it is smaller than the sum of its proper divisors (329458164364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320431909364 is a wasteful number, since it uses less digits than its factorization.

320431909364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161183135 (or 161183133 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 44.

The spelling of 320431909364 in words is "three hundred twenty billion, four hundred thirty-one million, nine hundred nine thousand, three hundred sixty-four".